I actually use this soap to bath as opposed to on my face.
I use it because of the strong sandalwood scent that I'm a fan of. But not sure about using it on my face. I haven't really noticed an improvement in skin tone or texture all over my body, hence the effectiveness in terms of "skin lightening" is questionable. But I use this product for the divine scent, so perhaps I'm using it incorrectly!
Check out my Instagram @Shmithi_Beauty or blog shmithi.co.za for more reviews.